You are designing a Windows Phone 7 application. The application downloads images from a photography website. The UI is not responding while downloading these images. You need to recommend an update to the application to prevent it from being unresponsive while downloading images. What should you recommend?

A.
Use the OpenReadAsync() method of the WebClient class.

B.
Use the BeginGetRequest() method of the WebClient class.

C.
Use the BeginGetRequest() method of the HttpWebRequest class.

D.
Use the DownloadStringCompleted() method of the HttpWebRequest class.